Table 3.

Membership and roles of the CWG

Category	n	Role
Practitioners delivering intervention	12	Intervention design and delivery—led by DAFNE-trained dietician and nurse educators, with input from DAFNE-trained physicians (3 NHS centres).
Diabetes specialist dieticians	4
Diabetes specialist nurses	5
Consultant diabetologists	3
Clinical psychologists	2	Intervention design and provision of clinical supervision to DAFNE practitioners delivering the intervention.
Process evaluation research teams	6	Behavioural psychologists: intervention design and process evaluation, via post-course patient and practitioner interviews, observation and fidelity assessment. Social scientists: process evaluation via longitudinal interviews at 3 and 6 months.
Behavioural psychologists	4
Social scientists	3a
Study manager	2b	Oversight of DAFNEplus research programme (project management, ethics, governance etc.) with expertise in knowledge mobilisation and shared facilitation of face-to-face meetings.
CWG Chair	1	Responsible for chairing the CWG meetings and delivery of CWG processes. Shared facilitation of face-to-face meetings with the study manager. Member of the social science process evaluation team with expertise in knowledge mobilisation.
CWG Administrator	1	Administrative support to CWG meetings (minute taking, room booking, organisation of meetings and travel).
Chief Investigator	1	Leadership of DAFNEplus Programme Grant and research-active Consultant Diabetologist.
Total	25

^aOne of the social scientists is also the CWG Chair. They are included in both sections of the table to highlight the dual role but are only counted once in the final total

^bA new study manager was appointed in March 2018 but the previous incumbent maintained their role in CWG